AGR
| Alabama and Gulf Coast | 4 |
ALM
| Arkansas Louisiana and Mississippi Railr | 1 |
AMTK
| Amtrak | 2 |
AOK
| Arkansas-Oklahoma Railroad | 2 |
ATSF
| Atchison Topeka & Santa Fe | 7 |
ATW
| Atlantic and Western | 2 |
BAR
| Bangor & Aroostook | 1 |
BCOL
| Canadian National Railways | 2 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 6 |
CBQ
| Chicago Burlington & Quincy | 2 |
CLC
| Columbia and Cowlitz Railway Company | 1 |
CMHX
| CarMath Incorporated | 5 |
CN
| Canadian National Railways | 4 |
CNA
| Canadian National Railways | 2 |
CNIS
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 15 |
CP
| Canadian Pacific Railway | 15 |
CR
| Conrail | 82 |
CSX
| CSX Railroad | 19 |
DH
| Delaware & Hudson | 1 |
DME
| Dakota, Minnesota and Eastern | 1 |
DMM
| Dansville and Mount Morris Railroad Comp | 1 |
DOTX
| USDOT/Federal Railroad Administration | 2 |
DRGW
| Denver & Rio Grande Western | 7 |
DWC
| Canadian National Railways | 1 |
EEC
| East Erie Commercial Railroad | 2 |
EVEX
| EVEX | 4 |
FBOX
| TTX Company | 1 |
FEC
| Florida East Coast | 1 |
FSR
| Fort Smith Railroad Company | 1 |
FSRR
| FerroSur | 1 |
FXE
| Ferromex | 6 |
GFRR
| Georgia and Florida Railnet | 2 |
GMO
| Gulf Mobile & Ohio | 1 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
GSMR
| Great Smoky Mountains | 1 |
GTRA
| Golden Triangle Railroad | 1 |
GTW
| Grand Trunk Western | 5 |
HATX
| Helm Financial Corporation | 1 |
HPJX
| Helm-Pacific Leasing | 1 |
HS
| H and S Railroad Company | 2 |
IBT
| International Bridge and Terminal Company | 1 |
IC
| Illinois Central | 1 |
ICG
| Illinois Central Gulf | 2 |
IHRC
| Indiana Hi Rail | 1 |
INRD
| Indiana Railroad | 5 |
KCS
| Kansas City Southern | 8 |
LRWN
| Little Rock & Western | 2 |
LV
| Lehigh Valley | 1 |
MCSA
| Moscow Camden and San Augustine Railroad | 1 |
MEC
| Maine Central | 3 |
MKT
| Missouri-Kansas-Texas | 1 |
MMA
| Montreal, Maine & Atlantic | 1 |
MNNR
| Minnesota Commercial | 1 |
MNS
| Minneapolis Northfield & Southern | 2 |
MP
| Missouri Pacific | 19 |
MPA
| Maryland and Pennsylvania Railroad | 1 |
MRS
| Manufacturers Railway | 1 |
MWCX
| Midwest Railcar Corporation | 3 |
NADX
| General Electric Rail Services | 1 |
NAR
| Northern Alberta Railways | 2 |
NOKL
| Northwestern Oklahoma | 3 |
NP
| Northern Pacific | 1 |
NS
| Norfolk Southern | 4 |
NW
| Norfolk & Western | 7 |
NYC
| New York Central | 53 |
OHPA
| Ohio and Pennsylvania Railroad Company | 1 |
ONT
| Ontario Northland Railway | 3 |
PGR
| Progressive Rail, Inc | 1 |
PICK
| Pickens Railway | 1 |
PRR
| Pennsylvania Railroad | 4 |
PSMX
| Esco Corporation | 2 |
QC
| Quebec Central | 1 |
RBOX
| Railbox Company | 3 |
RJCM
| R.J. Corman Railroad Company/ Memphis Li | 2 |
RJCR
| RJ Corman | 1 |
SBD
| Seaboard System | 2 |
SCFE
| South Central Florida Express Incorporated | 6 |
SCL
| Seaboard Coast Line | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SOO
| Soo Line | 3 |
SOU
| Southern | 21 |
SP
| Southern Pacific | 19 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TASD
| Terminal Alabama State Docks | 1 |
TBOX
| TTX Company | 3 |
TCAX
| General Electric Rail Services | 2 |
TFM
| Kansas City Southern De Mexico | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
TRMX
| The Railroad Museum-TRM Industries | 1 |
UP
| Union Pacific Railroad Company | 8 |
UPP
| Union Pacific Passenger | 1 |
VGN
| Virginian Railway | 1 |
VR
| Valdosta Railway | 1 |
WC
| Wisconsin Central | 1 |
WLO
| Waterloo Railway Company (Illinois Central) | 2 |
WP
| Western Pacific | 4 |
WSOR
| Wisconsin & Southern | 1 |